Apparatus for applying hard rubber to tire foundation-bands



APPARATUS FR APFLYJNG HRD HH;

- ummm@ COLIN MACBETH AND ERNEST SULLIVAN, F B11-@LLM Gl' AFPARATS FR APPLYING HARD RUBBER T0 TIRE lBGUQ'DA'IGN-BANBS.

Application ed Harsh 25,

T0 all 'whom it may concern:

Be it known that ive7 COLIN MACBETH ERNEST Snnnrve n, both subjects of the King of Great Britaini residing at Para, ltlrills7 ton Gross, Birmingham, in the county ol' lVeriviel. England. lieve invented `certain new and useful [apparatus for Applying Hard Rubber to Tire lFoundation-Bands, o* which the following is a specification.

This invention relates to the manufacture of solid rubber tiresn Solid rubber tires usually comprise a steel foundation band which is grooved or otherwise formed on its outer surface to which is vulcanized hard rubber or vuloanite strip on which tlie resilient portion or tread of tlie'tire is 'vulcanized lt has been proposed toepp. y the hard rubber strip to the foundation band by passing the strip between the outer surface of the band and tivo rollers supporting the band While a pressure roller beers upon the inner surface of tlie bend at a ooin` 'oetWeen the tivo supporting rollers or @aus ing the hard rubber to adhere to the band. In this arrangement the application ot tile pressure at a point between the points of support is likely to cause distortion of tlie band and may es a result cause imperfect adhesion between the strip and the band.

i According 'to this invention the pressure for causing the herd rubber to adhere to tlie band is applied on the inner surface of tire band at points coincident with or adjaoent to the points of support afforded by the supporting rollers, For this purpose We may provide. in the ease of tivo supointingn rollers, two pressure rollers situated within the band which near upon the inner surface of the latter at points coincident with or adjacent to the points oi' support0 The pressure applied in this nia'nner is therefore not liable to distort the band and by Ineens of this arrangeinent74 a satisfactory adhesion ot the strip to the band can be obtained. life also provide means for moving the pressure rollers into and out of Contact with the inner surface of the band and means ivliereby the support-ing rollers which are driven by suitable gearing to rotate the band., z. e unclutolied from the driving gearing pri y to the moving of the pressure rollers out oi? Contact with the band, so es to avoid or pre vent the liablitj,7 oi." air being trapped leetvveen the band and the strip as might occur it' the pressure were removed too soon.`

Specification of Letters Patent.

n'lieel lli Figs. 2 und il) op eonnered ln' a neit or eliain B3 'to n sinn.

ksuitalvi# iierenee to the accompanying dran'- ings in Wliieli:-

d Ynre l is a persreeiiie view illusatine one Construction of 'the improved Y Y r t vien and a `alan elio-wing more particularlv the ineans for moving the supporting' rollers into und oui'` ot eo; tact .vitli'tlie inner suriaee o tlie. eend and the means ine' tire sujporting rollers.

n. represents the oase or main 'traine of the niaelii e or apparatus. l, E represent the supporting rollers wliieli are lnurlod on their outer sui-ifi ees and are secured on shafts-ll mounted in bearii L in tlie frame A., and adapted to oe io *e by means of di )sed at the rear et the apparut-iis on one olii shafts 9 and fz a pectivelv a tor rotata suil'nlily driven iullev C l vvliieli s'na'ft has airirtion or o i gear Wheel l? en the other vsliatt so that when tile pulley C clutched to the shaft' B as hereinafter described, rotation can be imparted to both tlie shafts l and their rollers il in the saine directionfis the inondation band which may be grooved or otlwrivise Aformed on its exterior surface and whirl: supported vertically by its lower part resting' upon the two supporting` rollers il., he nan-d being rotated lijf the rotation imparted o the supporting rollers B, B and 'their :shafts B. lj. E, E' represent tin:- tivo pressure rollers disposed ivitliin the band D and rotatably mount-ed on pins li fixed it' a 'Frame EEE vvliieli is suieported or nioun l on a crank ein E3 medi., ly placed bek-.veen trie two pressure rollers E an( ed lijf' a er; ik E@ to a crank sliait- E supported in the 'traine A (see end as required by a` movable iveigrhfr", the

,position ot' the lever o arm 'F being cona'trolled or determined by nieans oi an ad justable cam G adapted to engage with a projection F2 on the lever 'F so tliat'tlie lever may be set to a position in which itsweight causes the crank E to move and force the frame i12 downwardly so that the pressure rollers are forced or pressed'into contact with the inner surface oi' the band. The cam G can also be set to raise the weighted lever which through the crank connection raises the frame E so that the pressure rollers are moved out of contact with the inner suriace -ot' the band; Fie'. 2 indicates the parts in this position. ln order to eiect these adjustments, the cam G is secured on one end of a shaft G having at its other end a crank handle G2 by means of Wii'eh the cani can be angularly moved in one direction or the other to raise or lower the lever and thus move vthe pressure rollers out ot' or into contact with the inner surface of the hand. 'The vulcanite or hard rubber st ip `ll is supported and guided along a table irl so as to pass between the exterior surface or' the hand and the sup" porting 0r driving rollers ll, the rotation of which latter causes the hand D with the strip H adhering thereto to rotate, the necessary pressure for eti'ecting' adhesion ol' the strip H to the band D being applied by the pressure rollers B, B when acted upon by. the weighted lever F. The rotation of tl hand l) and the application ol the strip li thereto in the manner atoresziid continues until the loand D is completely encircled by the strip ll. The pressure exerted by the rollers can he removed oy actuating the cain G as aitore-` said so to raise the. lever and the traine E2 carrying the pressure rollers. ln order to insure that the pressure rollers l2, E shall not he raised prior to the stopping of the rotation of the band D, a suitable clutch C is provided which is adapted to engage with thepulley C and to be actuated by pivoted lever C2 operated against the action of a spring Ca by a earn device C* on the shaft il when the latteris angularly moved by the handle The arrangement is suoli that before the cani G is `u:moved by the turning` of its shalt G to raise the Weighted lever F, the pivoted lever C2 is actuated by the cani device CL to move the clutch C out o'l engagement with the aforesaid pulley C so that `the shafts B and their rollers B no longer rotate. The coninued operation of the handle G eventually causes the cani G to move the weighted lever li amlfraisezzthe pressure rollers as aforesaicl.- By means oi this arrangement the rotation of the hand D can he stopped at any time during the application of 'the strip thereto, and as the pressure 'is not removed untilal'er the stoppage ofrota'tion, the lia,- hility or air heingltra sped between the hand and thestrip (as mignt occur if the pressure `were removed too {soon} is prevented: The

traine supporting the pressure rollers is provided with a slot El in which tl'idpin E5 fixed on part of the frame-A projects so as to allow for the necessary up, and down movement of the frame but to prevent undue tilting olf the iframe about its crank or supporting pin. The frame E2 may carry two langed guide rollers I by means of pivoted arins l', the said guide rollers l: being` adapted to hear by their own Weight on the inner surface ot the hand with their franges projecting' against each edge or side of the hand. The guide roller l can hev removed away from the. hand into au inoperative position Ly angularly moving; the supporting arms l until they rest against 'iii stops l2 on the frame E2. The guide rollers l may be readily removed to enable different diameter rollers or rollers of cli `rent ividt-hs to be i'itted to suit various v of hands or the said rollers may, as inde-ated in Fig. l, be ol. stepped or co ed :formation to suit various 'Widths 'of hands. Ti-leaiis for trin1miior ;1 the edges of the strip durif,1 application to the hand may lie provided and one arrangement for rthis purpose is indicated in Fig'. l hy dotted lines. l'n this case tivo knives il, i are moui'ited one on each side of the hand to cut the edges or" the vulcanite strip after the latter has passed beyond the point of inessure. These lrnive's are shown in the torre` of short liars but rod Je may he angularly movable in suit-k able hearings hy a crank handle il which can lie moved through say an angle or1 130 toplace the lniives in an inoperative position. itfter the strip has completely encircled the hand D the driving or supporting rollers E are unclutched from the drive;

ingmechanisni and the frame E2 carrying the pressure rollers lll is subsequently raised in the nianner above described and the guide rollers l are moved out of engagement with the band so that the band D is left tree to loe removed from the apparatus. lNhile the parts are in this position a fresh hand can he inserted in the apparatus. ln the case ot applying` a strip to a'loand being used for a second time it may loe that uneven or untrue surfaces exist `on the band and in order that the driving or supporting rollers Pz-may adapt themselves to any suoli un even surfaces they' may lie mounted on i ,seoeee ii suoli a manner iiut they may r 'though they are e'ttzielieel to tli il eine es to enable 'tliein to lie p xweo. lig; tlie rotation oi lie ser o D lil/'liet We eleini :intl to secure by Letters Fstent ei' the. 1niiecl S ll ln un apparatus for the purpose de seribeiL the eoi oinetion of s plurality of rollers udupteflto support u tire ir'oundeA tion bend, and menuisier spor-fing pressure tlie interior of s bund. s pportefl oy seid ollers si; peints eoineiclen; with or adjacent .lie n is of support provided by the suoig rollers. L., in en api'mruus for tlie iiuirpose (leseribeil, the eoinliiinition of o. plurality or' rollers adapted. to supiiaort :i tire louutletion 1nd, :i freine the nenti enel arranged to of the limiti L j. le poni" l supporting roll 7 7 erlepiei to be surroi nrorietl with press ers, tue nessure rollers into :ini vii'i the lwinil.

n eppsretus for the purpose de lie eon'ibinetiou o; plurality of 1 spied 'to support zi tire 'tounclution u freine. adapted to oe surrounded by 'nl und provided with pressure rolle-rs @munged to weer ig/einst the in er ieee o the il :it points efeiiioeident with or zirljeeent goins of support )o tine 1, Sill@ ln an epperiztus for scribe-rl, the combinatie rollers adapted 'to support a,

bandvb ineens for driving ille points ing rolls,

fleeting rung; rolll l 4' 'ing bet-s tile pressure ineens.

3. .in un apparatus for the purpose elethe combination of a plurality of rollers adapted to support. e 'tire foundation limiti, ineens for driving said rolle 's ineluding :i clutch, pressure rolls movable to and from engagement with the inner face of e tire bend on the supporting rollers, u lia-nii eetneiecl. eznn for moving the pressure. rolls to inoperative position, und means whereby the el teli will be moved to disconnect the driving devices und supporting,` rolls prior to said een), moving the pressure rollers from the banal 7. ln :in apparatus for the purpose described, the combination of a. plurality of rollers adapted to support e tire foundation bend? means for exerting pressure on tile inner time of s bund supportecl by said rellers, guiding rollers adapted to extend through :L bend on the supportingrollers and ene-ege the edges of tire strip pass-A tlie supporting rollers and 01:11 seid be ing' rollers out engagement with the henri.

ln an apparatus for the purpose de" seriliecl the combination of e, plurality of rollers spied to support e tire foundation eend, e 'frame adapted to be surrounded by a mind supported. on seid rollersy and provided with pressure rollers arranged, to eX- eri pressure on the inner fece oiE e beni-l points eoF 'ident with or adjacent the poin of support provided by the supporting roi (l, und ineens for moving seid. guiet l ers` and guide rollers mounted on pif/2 otelly Connected to the frame and adapted to engage s tire strip passing between the foundation band, and the supporting rollers.

i), In nu apparatus for the purpose describe(`l tlie eou'rbinstion of e plurelit of rollers adapted to support a, tire foundation band, Ineens for exerting pressure onthe inner ieee oi? av band supported by seid Zollers, und meins for trimming the edges afin tire strip passing between the srpporting rollers and e 'foundation bend supported thereon.

COLIN MACBETH. ERNEST SULLVAN. 

